shady 2 pair, need turn and river help

[AZK]

My image is pretty solid. The first limper is pretty loose in terms of calling raises preflop and limping early. I think the 2nd caller would have raised a set/straight on the turn, so I'm not so worried about him as much as I am about the first player. The first player would likely 3bet the nut on the turn or call with a set. I can't really decide whether or not he would lead the river with a set.